Introduction; Electrical Transmission Equipment; Interface Properties Of The Ssm6000; Bus Cable - PRONOVA SSM 6000 User Manual

Description
PROFIBUS interface
1

Introduction

This technical description deals with the Profibus DP (DP Decentralized Periphery) slave interface of the SSM6000.
The correct description is as follows:
Profibus-DP: Compliance to IEC 61784 Ed.1:2002 CPF 3/1
2

Electrical transmission equipment

2.1

Interface properties of the SSM6000

The SSM6000 comes with a galvanically (optically) isolated Profibus interface according to IEC61784 Ed.1:2002 CPF3/2 (formerly
EN50170). The output driver has a bus capacity of less than 10pF. The galvanic isolation offers overvoltage protection for up to
2500Vrms (1min.). The maximum data rate achieved totals 12Mbit.
2.2

Bus cable

All devices are connected in a line bus structure. Up to 32 stations (masters, slaves or repeaters) can be connected in one segment.
The bus cable to be used should have the following properties:
Wave resistance
Capacitance per unit length
Loop resistance
Line cross-section
Example: Schuricht, article:
6XV1830-3BH10(1X2X0.25MM2)
Example: Profichip, article: FCC 2xAWG22 PB
2.3

Shielding

In order to achieve a high degree of system resistance to electromagnetic interference, the shield should be connected to protective
earth at both ends, if possible, and in a highly conductive manner using large-surface shield clamps. This additionally serves as
equipotential bonding for the devices.
2.4

Connector

A 9-pole D-SUB plug connector is preferably used for PROFIBUS networks with protection according to IP20. The SSM6000 comes
with a 9-pole D-SUB socket. A supply voltage of 5V is made available via this plug connector for active Profibus connectors.
Example: VIPA, EasyConn PB
:GA-Profibus_060105-EN-pro.doc
Permissible values
135..165
< 30
110
> 0.34
Page 5 of 15
Units
Ohm
pF/m
Ohm/km
mm
2
05.01.2006